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Copyright © 2005-20182019 MIPI Alliance, Inc.
All rights reserved.
Confidential
Specification for
Camera Serial Interface 2
(CSI-2
SM
)
Version 2.13.
0
14 December 201731 May 201
9
MIPI Board Adopted 9 April 2018
10 September 2019
This document is
a MIPI Specification. MIPI member companies’ rights and obligations apply to this
MIPI
Specification as defined in the MIPI Membership Agreement and MIPI Bylaws.
This document is
subject to further editorial and technical development.Further technical changes to
this document are expected as work continues in the PHY Working Group
.
![](https://csdnimg.cn/release/download_crawler_static/12922700/bg2.jpg)
Specification for CSI-2 Version 2.12
Version 3.0
14-Dec-2017
31-May-2019
ii Copyright
Copyright © 2005-20182019 MIPI Alliance, Inc.
All
All rights reserved.
Confidential
Confidential
NOTICE OF DISCLAIMER
The material contained herein is provided on an “AS IS” basis. To the maximum extent permitted by
applicable law, this material is provided AS IS AND WITH ALL FAULTS, and the authors and developers
of this material and MIPI Alliance Inc. (“MIPI”) hereby disclaim all other warranties and conditions, either
express, implied or statutory, including, but not limited to, any (if any) implied warranties, duties or
conditions of merchantability, of fitness for a particular purpose, of accuracy or completeness of responses,
of results, of workmanlike effort, of lack of viruses, and of lack of negligence. ALSO, THERE IS NO
WARRANTY OR CONDITION OF TITLE, QUIET ENJOYMENT, QUIET POSSESSION,
CORRESPONDENCE TO DESCRIPTION OR NON-INFRINGEMENT WITH REGARD TO THIS
MATERIAL.
IN NO EVENT WILL ANY AUTHOR OR DEVELOPER OF THIS MATERIAL OR MIPI BE LIABLE TO
ANY OTHER PARTY FOR THE COST OF PROCURING SUBSTITUTE GOODS OR SERVICES, LOST
PROFITS, LOSS OF USE, LOSS OF DATA, OR ANY INCIDENTAL, CONSEQUENTIAL, DIRECT,
INDIRECT, OR SPECIAL DAMAGES WHETHER UNDER CONTRACT, TORT, WARRANTY, OR
OTHERWISE, ARISING IN ANY WAY OUT OF THIS OR ANY OTHER AGREEMENT RELATING TO
THIS MATERIAL, WHETHER OR NOT SUCH PARTY HAD ADVANCE NOTICE OF THE
POSSIBILITY OF SUCH DAMAGES.
The material contained herein is not a license, either expressly or impliedly, to any IPR owned or controlled
by any of the authors or developers of this material or MIPI. Any license to use this material is granted
separately from this document. This material is protected by copyright laws, and may not be reproduced,
republished, distributed, transmitted, displayed, broadcast or otherwise exploited in any manner without the
express prior written permission of MIPI Alliance. MIPI, MIPI Alliance and the dotted rainbow arch and all
related trademarks, service marks, tradenames, and other intellectual property are the exclusive property of
MIPI Alliance Inc. and cannot be used without its express prior written permission. The use or
implementation of this material may involve or require the use of intellectual property rights (“IPR”)
including (but not limited to) patents, patent applications, or copyrights owned by one or more parties,
whether or not members of MIPI. MIPI does not make any search or investigation for IPR, nor does MIPI
require or request the disclosure of any IPR or claims of IPR as respects the contents of this material or
otherwise.
Without limiting the generality of the disclaimers stated above, users of this material are further notified that
MIPI: (a) does not evaluate, test or verify the accuracy, soundness or credibility of the contents of this
material; (b) does not monitor or enforce compliance with the contents of this material; and (c) does not
certify, test, or in any manner investigate products or services or any claims of compliance with MIPI
specifications or related material.
Questions pertaining to this material, or the terms or conditions of its provision, should be addressed to:
MIPI Alliance, Inc.
c/o IEEE-ISTO
445 Hoes Lane, Piscataway New Jersey 08854, United States
Attn: Managing Director
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Version 2.1 Specification3.0
Specification for CSI-2
14-Dec-201731-May-2019
Copyright © 2005-20182019 MIPI Alliance, Inc. iii
All rights reserved.
Confidential
Contents
Figures xiii
Tables xxvi
Release History ...............................................................................................................xxx
1 Introduction .................................................................................................................1
1.1 Scope ............................................................................................................................... 1
1.2 Purpose ............................................................................................................................ 1
2 Terminology .................................................................................................................2
2.1 Use of Special Terms ....................................................................................................... 2
2.2 Definitions ....................................................................................................................... 2
2.3 Abbreviations ................................................................................................................... 3
2.4 Acronyms ......................................................................................................................... 3
3 References ....................................................................................................................6
4 Overview of CSI-2 .......................................................................................................9
5 CSI-2 Layer Definitions ............................................................................................ 11
6 Camera Control Interface (CCI) .............................................................................13
6.1 CCI (I
2
C) Data Transfer Protocol .................................................................................. 14
6.1.1 CCI (I
2
C) Message Type ............................................................................................. 14
6.1.2 CCI (I
2
C) Read/Write Operations ............................................................................... 15
6.2 CCI (I3C) Data Transfer Protocol .................................................................................. 21
6.2.1 CCI (I3C SDR) Data Transfer Protocol ...................................................................... 21
6.2.2 CCI (I3C DDR) Data Transfer Protocol ..................................................................... 29
6.3 CCI (I3C) Error Detection and Recovery ...................................................................... 39
6.3.1 CCI (I3C SDR) Error Detection and Recovery Method ............................................. 39
6.3.2 CCI (I3C DDR) Error Detection and Recovery Method ............................................ 41
6.3.3 Error Detection and Recovery for CCI (I3C) Master Devices ................................... 47
6.4 CCI (I
2
C) Slave Addresses ............................................................................................. 47
6.5 CCI (I3C) Slave Addresses ............................................................................................ 47
6.6 CCI Multi-Byte Registers .............................................................................................. 48
6.6.1 Overview .................................................................................................................... 48
6.6.2 Transmission Byte Order for Multi-Byte Register Values .......................................... 50
6.6.3 Multi-Byte Register Protocol (Informative) ............................................................... 51
6.7 CCI I/O Electrical and Timing Specifications ............................................................... 55
7 Physical Layer ...........................................................................................................60
7.1 D-PHY Physical Layer Option ...................................................................................... 60
7.1.1 D-PHY v2.1 Compatibility with D-PHY v2.0 (Informative) ..................................... 61
7.2 C-PHY Physical Layer Option ....................................................................................... 62
8 Multi-Lane Distribution and Merging ....................................................................65
8.1 Lane Distribution for the D-PHY Physical Layer Option .............................................. 72
8.2 Lane Distribution for the C-PHY Physical Layer Option .............................................. 75
8.3 Multi-Lane Interoperability ........................................................................................... 77
8.3.1 C-PHY Lane De-Skew ............................................................................................... 79
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Specification for CSI-2 Version 2.12
Version 3.0
14-Dec-2017
31-May-2019
iv Copyright
Copyright © 2005-20182019 MIPI Alliance, Inc.
All
All rights reserved.
Confidential
Confidential
9 Low Level Protocol ....................................................................................................81
9.1 Low Level Protocol Packet Format ............................................................................... 82
9.1.1 Low Level Protocol Long Packet Format ................................................................... 82
9.1.2 Low Level Protocol Short Packet Format .................................................................. 87
9.2 Data Identifier (DI) ........................................................................................................ 88
9.3 Virtual Channel Identifier .............................................................................................. 88
9.4 Data Type (DT) .............................................................................................................. 90
9.5 Packet Header Error Correction Code for D-PHY Physical Layer Option .................... 91
9.5.1 General Hamming Code Applied to Packet Header ................................................... 91
9.5.2 Hamming-Modified Code .......................................................................................... 92
9.5.3 ECC Generation on TX Side ...................................................................................... 96
9.5.4 Applying ECC on RX Side (Informative) .................................................................. 97
9.6 Checksum Generation .................................................................................................... 99
9.7 Packet Spacing ............................................................................................................. 101
9.8 Synchronization Short Packet Data Type Codes.......................................................... 102
9.8.1 Frame Synchronization Packets................................................................................ 102
9.8.2 Line Synchronization Packets .................................................................................. 103
9.9 Generic Short Packet Data Type Codes ....................................................................... 105
9.10 Packet Spacing Examples Using the Low Power State ............................................... 106
9.11 Latency Reduction and Transport Efficiency (LRTE) ................................................. 109
9.11.1 Interpacket Latency Reduction (ILR) ....................................................................... 109
9.11.2 Using ILR and Enhanced Transport Efficiency Together ......................................... 120
9.11.3 LRTE Register Tables ............................................................................................... 121
9.12 Data Scrambling .......................................................................................................... 148
9.12.1 CSI-2 Scrambling for D-PHY ................................................................................... 149
9.12.2 CSI-2 Scrambling for C-PHY ................................................................................... 150
9.12.3 Scrambling Details .................................................................................................... 153
9.13 Packet Data Payload Size Rules .................................................................................. 169
9.14 Frame Format Examples .............................................................................................. 170
9.15 Data Interleaving ......................................................................................................... 173
9.15.1 Data Type Interleaving .............................................................................................. 173
9.15.2 Virtual Channel Identifier Interleaving ..................................................................... 177
10 Color Spaces.............................................................................................................179
10.1 RGB Color Space Definition ....................................................................................... 179
10.2 YUV Color Space Definition ....................................................................................... 179
11 Data Formats ...........................................................................................................181
11.1 Generic 8-bit Long Packet Data Types ........................................................................ 183
11.1.1 Null and Blanking Data ............................................................................................ 183
11.1.2 Embedded Information ............................................................................................. 184
11.1.3 Generic Long Packet Data Types 1 Through 4 ......................................................... 184
11.2 YUV Image Data ......................................................................................................... 185
11.2.1 Legacy YUV420 8-bit ............................................................................................... 185
11.2.2 YUV420 8-bit ........................................................................................................... 188
11.2.3 YUV420 10-bit ......................................................................................................... 192
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Version 2.1 Specification3.0
Specification for CSI-2
14-Dec-201731-May-2019
Copyright © 2005-20182019 MIPI Alliance, Inc. v
All rights reserved.
Confidential
11.2.4 YUV422 8-bit ........................................................................................................... 194
11.2.5 YUV422 10-bit ......................................................................................................... 196
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